AT3™ RCO™ Red Dot Sight with Circle Dot Reticle and Variable Riser Mounts


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The RCO (Rugged Carbine Optic) Does It All – Circle Dot Reticle, Night Vision Compatible, with Riser Mounts to Fit Any Long Gun or PDW

The RCO is Available on Amazon!

Premium Features

  • The reticle consists of a 2 MOA dot with 62 MOA circle, making target acquisition fast in any conditions
  • Perfect for a 50/200 yard zero with the red dot, with a 7-yard holdover with the bottom crosshair
  • A wide 25mm multicoated lens ensures a crystal-clear view of your target, and a broad field of view looking down the sight
  • 2 night vision compatible settings with 9 daylight settings, with a battery life up to 50,000 hours on the lowest daylight setting
  • Compatible with AT3’s RRDM and 4xRDM Magnifiers for great clarity at long range

Risers for Any Application

  • The RCO includes a low mount as well as a high cantilever riser mount for Picatinny rails
  • Both mounts are sleek and flush-fitting on both sides, making them snag-free
  • Using the included risers and spacer, get Absolute Cowitness or Lower 1/3 Cowitness for your AR15
  • Also great for AK rifles, CZ Scorpions, Tavor and X95, as well as many other modern shooting platforms

Tough and Protected

  • Optimized for the AR, but tough enough to withstand harsh recoil from shotguns and high caliber rifles
  • Included transparent lens caps keep your lenses protected while providing a complete look at your target
  • Forged aluminum housing is our toughest yet, with shockproof and waterproof circuitry inside
  • Windage and elevation knobs are flush-fit, with no need for protective caps that get lost
  • It’s as tough as they come, but still backed by the AT3 Lifetime Warranty

AT3 RCO - Ready for use with MagnifiersAT3 RCO - Fogproof and Waterproof, plus Protective Lens Covers

Technical Specifications:

  • Power / Obj. Lens: 1x25mm
  • Reticle: 2 MOA Red Dot with 62 MOA Circle
  • Lens Coating: Multi-coated
  • Mount height: Variable – Includes Low Mount, High Mount, and Spacer for multiple Cowitness types
  • Mount Type: Picatinny only
  • Battery life: up to 50,000 hours on lowest daylight setting
  • Battery saving: 6 hour auto-shutoff with brightness memory
  • Battery Type: CR2032 – Battery Included
  • Weight: 4.2 oz
  • Mounting Length: 2.6 in
  • Windage/Elevation Click Value: 0.5 MOA per click
  • Adj Range: /- 45 MOA (total adjustment range 90 MOA)
  • Parallax Free: 50 yds
  • Eye Relief: Unlimited
  • Field of View: Unlimited
  • Night Vision Compatible: Yes
  • Nitrogen filled: Yes
  • Shockproof: Yes
  • Waterproof/Fogproof: Yes
  • Finish: Matte black anodized

Inside of the box:

Have Questions About this Product?

The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.

AT3 Lifetime Warranty Logo

All AT3 Tactical Brand Products carry a lifetime warranty against manufacturer’s defects.

This includes AT3 Red Dot SightsHandguardsIron Sights, and any other product that carries the “AT3 Tactical” or “AT3™” name. For other brands (ex. Magpul or Troy), please refer to the manufacturer’s warranty policy.

In the event that your AT3™ product becomes unusable, we will repair or replace the product at no charge to you.

If we cannot repair your product, we will replace it with a product in perfect working order of equal or better physical condition. The warranty is fully transferable, but we may require information about the original purchase to validate the authenticity of the product.

If your product is in need of warranty service, please contact AT3 Tactical to start the process

Our contact info is available here. To expedite processing, please provide your order information and description of the defect.

Please note: The AT3 Lifetime Warranty does not cover loss, theft, intentional damage or cosmetic damage that doesn’t affect the performance of the product.

Customer Reviews

Based on 47 reviews
Robert Kasco
Works on AP5

A very nice circlet dot (AT3™ RCO™), feels proper on my AP5, have not taken mounted dot to range as of yet to sight in. Mounted with high mount, also still able to use standard drum sights for sighting. Would be even better if there was a QD mount. With a lifetime warranty. Will purchase from this company again.

Thanks for sharing your feedback! We're glad you're satisfied with your purchase.

James Mcelwrath
Great Service

First AT3 product. Fast service great packaging looks and feels like a good solid choice. With a lifetime warranty. You cant go wrong. Will purchase from this company again.

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Steven Little
Near perfect

Have two other AT3 tactical red dots, and I liked the features listed when it came up for sale. Nice inclusions, like the slightly belled body, giving a wider field of view, allowing me to mount close to my eye. This is not necessarily a sight you want to move way forward. Love all the features. Nice, clean, click adjustments. Hopefully they will hold zero over time (just received and mounted/ zeroed). I really like the "touch either" + or - button to turn unit on. If it can't have Motion Activated, this feature makes it a quick and easy "on". That is nice for picking the gun up in the middle of the night. Love the dot in circle reticle. My favorite for a red dot. Choice of green would be a nice option. Only complaint so far. Front cover cap comes off easily, so that will probably get lost soon. Came off as I removed rifle from rifle case. Another reviewer had same issue.

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Great optic!Great value!

Bought this to throw on the "Cheapest possible AR pistol I can build".However I have always been a "you get what you pay for" guy when it comes to optics.I was going to get a used Aimpoint or Triji but I found the RCO and thought it would be perfect for a knock around build.
I went with the RCO because of A.The price B.The larger FOV C.Circle Dot reticle.Perfect setup for HD,truck gun, and range plinking.
Solid quality,perfect finish,clear glass,sharp reticle,and the best part is that it comes with 1/3,absolute and low mounting options right out of the box.
1 thing to note is the mounting screws do not come with loctite on them so make sure you have some when installing the mount(s).
You cannot beat this optic for the price!

Thanks for sharing your feedback! We're glad you're satisfied with your purchase. Cheers!

Really good.

I picked this puppy up for an AK. It is a really great quality, the reticle is crisp and clear. All of the hardware options are appreciated as well. Very nice to zero, the clicks on the adjustments are audible, clear, and accurate. Seems to hold zero real well, haven't shot much with it yet, but it's not moving. The only gripe I have isn't even about the red dot itself. Its the clear flip up lenses protectors. My front one keeps popping off through general movement and storage. At this point, I don't even know where it got lost. The rear flip up lense cover is so much more secure than the front. Other than that, no issues or complaints with the rco unit itself.